Are you asking for confirmation on what you were told? If so, you can check the iPhone's model number against Apple's documentation to see if it works on AT&T: http/www.apple.com/iphone/LTE/
Are you asking for confirmation on what you were told? If so, you can check the iPhone's model number against Apple's documentation to see if it works on AT&T: http/www.apple.com/iphone/LTE/